where can i get a head gas flowed pressure tested and checked for any damage its of ma boys 106 gti theres a tiking noise of the top end its probably 1 of the cams or 1 of the lifters but remember a few years ago had a xr2 with the same problem put a cam kit in still made the same noise turned out the head wis knackered going to put a kent fast road cam kit in it dont want to do all that work and end up with the same noise looking for somewhere around lanarkshire glasgow area but would travel more if needed thanks